What I noticed right away is that the technique is basically an advanced versions of one that I had already learned with you. This technique involves creating a clone with the only difference being the chakra distribution. When you divide your chakra, instead of dividing the chakra evenly, you need to focus a large amount of concentrated chakra and then release the concentrated chakra out of your body. Then shape this chakra into your appearance. That what the basis of the technique is. Nonetheless this clone cannot use elemental techniques so it is only useful for regular ninjutsu and physical attack, hence it must be used wisely and cannot be used as freely as a normal shadow clone. Any chakra sensors or eye techniques can tell the difference between this clone but a normal ninja cannot. Now what makes it explode is the large concentrated chakra you used to make it. You can disperse the clone while releasing the energy to cause a large explosion due to the sudden expansion of compressed chakra. This is more for supplementary uses, not offensive or defensive. But overall it's a sweet technique to have. About the countering part, since I have my sharingan I'm safe and in realizing that the clone is essentially unstable and capable of detonation, the best thing to do is swiftly disperse it from a distance utilizing a fast-moving elemental technique that would be hard for it to avoid, especially given its limitations. This technique would work well if the opponent was prone to close-combat encounters. If used over a body of water, it can kick up some of it and temporarily serve as a distraction. Or I assume if you trap your opponent into something with wind, and explosion will work good, because the wind will fuel the explosion.